Earth

Earth, known as Gaia in Greek, is a planet in the solar system. Formed around 4.54 billion years ago when two planets collided, Earth originally consisted of the supercontinent of Pangea, but the continents would divide into North America, South America, Africa, Europe, Asia, Oceania, and Antarctica. Over 7.3 billion humans live in Earth, with 14,000,000 confirmed species of wildlife, around a trillion species in total, and 200 countries, with the biodiversity constantly expanded.